2013 Fiscal Year Final Research Report
Developing an advanced seismic design method for steel bridge structures using seismic dampers
| Project/Area Number |
23360200
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Structural engineering/Earthquake engineering/Maintenance management engineering
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| Research Institution | Meijo University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
HARADA Takanori 宮崎大学, 工学部, 教授 (70136802)
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| Co-Investigator(Renkei-kenkyūsha) |
GE Han-bin 名城大学, 理工学部, 教授 (90262873)
SUZUKI Moriaki 愛知工業大学, 工学部, 教授 (90273276)
WATANABE Kouichi 名城大学, 理工学部, 准教授 (90387762)
KASAI Akira 熊本大学, 自然科学研究科, 准教授 (20303670)
HANNJI Takeshi 名古屋大学, 工学研究科, 准教授 (80452209)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | 鋼橋 / 大地震 / 耐震補強 / 制震ダンパー / 鋼 / アルミニウム / 座屈拘束ブレース |
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| Research Abstract |
This study is aimed to develop an advanced seismic design of steel bridge structures, comprising: 1) The three dimensional nonlinear earthquake response behavior of steel truss and arch bridges near a thrust fault. 2) The clarification of low-cycle fatigue characteristics of steel and aluminum alloy BRBs. 3) A comparative study on seismic behavior of steel truss models with either steel or aluminum BRB diagonal members. The main results are: 1) The thickness of sedimentary layer and the spatial position of bridges strongly affect their responses. 2) A new bolt-assembled high- performance aluminum alloy BRB is developed to avoid the adverse effects of the welding. 3) An accurate low-cycle fatigue verification method is developed. 4) Care must be given in the design of steel bridges with BRBs to the fact that the larger axial rigidity/strength of steel BRBs than that of aluminum BBBs may induces larger damages in the surrounding members of steel bridges.
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